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Pullulan production from sugar beat molasses
(
Qatar University
, 1997 , Article)
Sugar beet molasses was used as the substrate for the production of pullulan with Aureobasidum pullulans ATCC 42023. In addition biomass, residual sugar and final pH of the culture medium were investigated. In comparing ...
Pollen Morphology Of The Family Boraginaceae In Qatar
(
Qatar University
, 1995 , Article)
The pollen morphology of six species belonging to six genera of Boraginaceae in Qatar have been investigated by LM and SEM. The examined species proved to be eurypalynous, having different morphological types and can be ...
Plant growth, metabolism and adaptation in relation to stress conditions XII. Carbohydrate and acid accumulation in phaseolus vulgaris and zea mays stressed with sodium sulphate
(
Qatar University
, 1990 , Article)
Phaseolus vulgaris and Zea mays seedlings and plants were cultured on quarter-strength Hoagland nutrient medium with or without increasing concentrations of Na^SO^. Sodium sulphate increased the levels of reducing sugars ...
Physiological growth analysis of the life-history of calotropis procera (AIT.) AIT. F.
(
Qatar University
, 1992 , Article)
Growth of Calotropis procera was analysed by distribution of dry weight throughout the plant at various stages in growth. Dry biomass, leaf area index, specific leaf area, leaf weight ratio, leaf area ratio, net assimilation ...
Calcium Carbonate Content, Some Chemical And Physical Properties Of The Sudan Gezira Soils And Their Implications
(
Qatar University
, 1991 , Article)
Eight soil pcdons representing a range of aridisols, vertisols and recent alluvium were studied for various chemical and physical properties. Generally the soils were clayey except the recent alluvium which was loamy but ...
Mineral Content Of Soil And Wild Plants From Saudi Arabia
(
Qatar University
, 1996 , Article)
Soil and wild plant samples were collected from different localities from the industrial Yanbu city, Saudi Arabia, and analyzed for their mineral content. Soil samples from the tested localities differed greatly and contained ...
Role of Proteinases in the Degradation of the Major Storage Proteins of Linseed Germinating Seeds
(
Qatar University
, 1999 , Article)
The proteolytic activities of the germinating linseed using casein, azocoll and linseed globulin as substrates showed a steady increase until 48 hr of germination, followed with a rapid increase to reach a peak after 3 ...
Monovalent Anion Interaction on the Electron Flow of Photosystem II in Soyabean Cells
(
Qatar University
, 1994 , Article)
Steady state of electron transport measurements from water to DMQ (2, 5 - dimethyl - P- benzoquinone) show a maximum bicarbonate effect (about four fold stimulation) following the addition of 5 mM HCO"3 to the previously ...
Studies on some cowpea cultivars: II - suitability for aspergillus flavus growth and Aflatoxin production
(
Qatar University
, 1993 , Article)
Sixteen mycotoxin-free seed cultivar samples of cowpea (Vigna unguiculata (L.) Walp.) were inoculated with spores* of Aspergillus flavus Link (IMI 89717) to determine varietal differences in terms of aflatoxin production. ...
Study Of Aerobiology Of Alexandria, Egypt
(
Qatar University
, 1991 , Article)
The present study provides a survey of atmospheric pollen and fungal spores in the city of Alexandria with the aim of supplying information that may be useful in the treatment of aeroallergies. Considerable attention has ...